It is absorbing because it is going through endothermic process (absorbing heat) and the change in color means it is undergoing a chemical reaction
PEMDAS METHOD
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
Methon
Answer:
D
Explanation:
Solid, Liquid and Gas are the states of matter. Light is neither a solid, a liquid, nor a gas.
Boyle’s Law illustrates the inverse relationship of volume and pressure. It follows the formula p1V1 = P2V2 , where P1V1 denotes initial pressure and volume and P2V2 denotes values of pressure and volume.
Now, let us work out for what is asked above.
a. if the pressure is doubled
50.0 p = V x 2p
V = 50.0 p / 2p
= 50.0 /2
= 25.0 m^3
b. if the pressure is cut in half
50.0 p = V x p/2
100 p = V x p
V = 100 m^3
c. if the pressure is tripled
50.0 p = V x 3p
V = 50.0 p / 3p
= 50.0 /3
=16.7 m^3
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Answer:
V₁ = 12.1 mL
Explanation:
Given data:
Volume of NaOH required to neutralize = ?
Molarity of NaOH = 4.8 M
Volume of HCl = 20 mL
Molarity of HCl = ?
Solution:
Chemical equation:
HCl + NaOH → NaCl + H₂O
In neutralization reaction the equal amount of H⁺ from acid and OH⁻ from base react to form water and salt is also formed.
Formula:
M₁V₁ = M₂V₂
M₁ = molarity of NaOH
V₁ = Volume of NaOH
M₂ = molarity of HCl
V₂ = volume of HCl
Now we will put the values.
4.8 M × V₁ = 2 M × 29 mL
4.8 M × V₁ =58 M. mL
V₁ = 58 M. mL / 4.8 M
V₁ = 12.1 mL
